Tellurium isotopes states

Antimony [7440-36-0J, Sb, belongs to Group 15 (VA) of the periodic table which also includes the elements arsenic and bismuth. It is in the second long period of the table between tin and tellurium. Antimony, which may exhibit a valence of +5, +3, 0, or —3 (see Antimony compounds), is classified as a nonmetal or metalloid, although it has metallic characteristics in the trivalent state. There are two stable antimony isotopes that ate both abundant and have masses of 121 (57.25%) and 123 (42.75%). 

Almost all other studies on elements other than iron are performed in absorption mode. For example, Bussiere and co-workers used the Mbssbauer effect to study the state of tin in supported Pt-Sn [37] and Ir-Sn [38] reforming catalysts, and of tin and antimony in mixed Sb-Sn oxides for the selective oxidation of propylene [39]. Also of note are Millet s investigations using the 125Te isotope to characterize the state of the tellurium promoter in multicomponent ammoxidation catalysts [40],... 

Changes in structure of nuclei between magic numbers 50 and 82 as indicated by a rotating cluster analysis of the energy values of the first 2+ excited states of isotopes of cadmium, tin, and tellurium. Proc. Natl. Acad. Sci. 78 (1981) 5296-5298. 

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